Previous Class Revision|Archaebacteria|Methanogens-Methane Producing|Halophiles|Thermoacidophiles|Blue Green Algae|Different Forms

Read the following statements and choose the correct statements from the options given below. I. Archaebacteria are of three types methanogens, halophiles and thermoacidophiles. II. About 850 species of bacteria are found in India. III. Some photosynthetic bacteria may be upto 3 mm long.

Kingdom Archaebacteria Thermoacidophiles Methanogens Halophiles Kingdom Eubacteria Cyanobacteria (BGA)

kingdom monera || Blue Green Algae || Archaebacteria || mycoplasma

Study the following statements and select the correct ones (i) Methanogens are archeabacteria which produce methane in marshy areas (ii) Nostoc is a filamentous blue green alga which fixes atmospheric nitrogen. (iii) Many membres of the genus Glomus form my corrhiza.

Select the correct combination of the statements (i-iv) regarding the characteristics of certain organisms. (i) Methanogens are archaebacteria which produce methane in marshy areas (ii) Nostoc is a filamentous blue-green alga which fixes atmospheric nitrogen (iii) Chemosnthetic autotrophic bacteria synthesise cellulose from glucose (iv) Mycoplasma lack a cell wall and can survive without oxygen The correct statements are

Assertion : In the human eye, there are three types of rods which possess their own characteristic photopigments that respond to red, green and blue lights. Reason : The sensations of different colour are produced by various combinations of these rods and their photopigments.

All green and blue-green algae are producers.

In the five kingdom system of classification, which kingdom includes blue-green algae, nitrogen-fixing bacteria and methanogenic archaebacteria ? What is the criteria of including these diverse organisms in single kingdom ?

Select the correct combination of the statement of the statement (A-D) regarding the characteristics of certain organisms (A) Methanogens are Archaebacteria which produce methane in marshy areas (B) Nostoc is a filamentous blue-green algae which fixes atmospheric nitrogen (C) Chemosynthetic autotrophic bacteria synthesize cellulose from glucose (D) Mycoplasma lack a cell and cen survive without oxygen The correct statement are